I have not Used the AboutMyMac.pkg patch yet, but I was tinkering around with the Dev tools, and noticed that the Processor pref pane correctly identifies the Atom (at least, somewhat). On a whim, I checked out what my MBP was reported as, and it's correctly reporting an "Intel Core 2 (Penryn) Processor". Just a curiosity that I thought you guys might want to know.
Vostro A90 1.6GHz/2GB/32GB SuperTalent 10.6.6
Mid 2009 MacBook Pro 2.8GHz/4GB/1TB+500GB, 10.6+Win7
Mini 1012 1.66GHz/1GB/160GB Win7 Pro